Asphalt-ripper.



A. KING. 'ASPHALT R'IPPER. APPLICATION Hum JUNE l1o`l 1907.

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ARTHUR KING, OF CHICAGO, ILLINOIS.

` ASPHALT-REFER.

Patented Feb. 11, 1908.

Application led Tune l0. 1907. Serial No. 378,148.

To all whom it may concern:

Be it known that I, ARTHUR KING, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented' certain new and useful Improvements in Asphalt-Rippers, of which the following is a ful clear, and exact description.

My invention relates to certain new and useful improvements in asphalt rippers, the object beingy to provide a mechanically operated power device of this character for ripping up asphalt street paving. Usually this is done by manual labor, the asphalt being cut or broken up into blocks and removed by pick aXes or crow bars, and it is therefore a very laborious task, requiring a greatnumber ofmen to a given piece of Work and consequently beingoluite an expensive undertaking. The asphaltA layer itself, being of a very tough and tenacious character, it is eX- ceedingly difficult to break up and separate the same from the concrete bed and my device has been designed to simplify the work of ripping the asphalt layer from the bed of concrete, and the breaking up of the asphalt into small blocks.

The invention is fully described in the following speciiication, and shown in the accompanying drawing in which g Figure l is a side view of an ordinary street paving roller, with the ripper bar attached thereto, land showing the parts in operative position, `and Fig. 2 is a perspective view of the ripper bar and afragment of the rear end of a roller.

In these views' 10, represents an ordinary street paving roller, traction engine or any other powerful self-propelled vehicle, which is provided with a draw head 11, by which wagons or other wheeled devices may be coupled to the roller, traction engine, etc. The ripper bar is seen at 20, and is preferably in the form of a channel iron, having a web 4in inserting it under the asphalt layer.

neath the same.

bar to rock u on its heel as a fulcrum, in the operation of t e device. The bar fits loosely in the drawhead so that it may adjust itself to the unevenness of the road, and may be handled by the attendant with greater eas plate 80, is usually secured upon the rear end of the roller immediately above the drawhead to protect the machine from injury.

Fig. 2 shows a steam roller that is provided with a double drawhead 12', 122, the ripper bar being secured in the upper drawhead. I Jfind that in ripping up asphalt of about one and one half to two or three inches in thickness the point 29 should normally be raised about three quarters of an inch from the ground but that when asphalt of less thickness is to be removed the point should be held nearer the ground. By raising or lowering the upper end of the ripper bar the variation at the lower end can be easily affected, it being only necessary to withdraw the coupling pin, insert the ripper bar in the proper drawhead and insert the pin.

In operation, the ripper bar is coupled to the steam roller, and the latter run or rather backed over the pavement from which it is desired to removel the asphalt layer. An attendant directs the point underneath the edge of the asphalt, preferably by prying it up or by placing the point of his pick aX under the edge of the asphalt layer, and deiiecting the point of the ripper bar under- The operator of the roller then backs up his machine causing the ripper bar to slide underneath the asphalt layer and bodily raise up the asphalt slab which lies in its path by means of the inclined portion of the ripper bar. When the raised block or slab has been raised sufliciently it breaks away from the body of the asphalt and slides up and 'falls ofi the bar onto the road. of the broken asphalt falls into the path of the steam roller and the rollers thereof run over this collection of broken up portions, causing considerable jar to the machine, which has the effect of vibrating the ripper bar so as to cause a prying action to its free end, thereby more effectually loosening the asphalt layer from the concrete bed. The slight incline of the flanges at the point makes Much the insertion of the point comparatively easy and the more abrupt inclined portion breaks the slabs away from the main body of the asphalt layer.l

By this machine I have been enabled to save an enormous amount of expense and labor in ripping up asphalt aving and at the same time have accomp ished the same amount of work in very much less time. In experimenting with various devices I have found that it is practically impossible to use a device which is pulled along the pavement, because the asphalt blocks slide up and engage the draft beam, thereby raising the cutting or ripping point up and away from the pavement'SFor this reason I have found it desirable and more effectual to attach the ripper bar to the rear end of the engine and push the same through the mass.

I am awaregl'thatvarious alterations and modifications of this device are possible without departing from the spirit of my invention, and -I do not therefore desire to limit myself to the exact construction shown and described in this specification.

i I claim as new and desire to secure by Letters Patent:

l. In an asphalt ri per, a ripper bar constructed and arrange to be secured to a suitable power device said ripper bar having an unobstructed breaking surface `from end to end.

2. In an asphalt ripper, a ripper bar having an inclined breaking portion, upon and by which the slabs of as halt, that lie in the path of the bar, are bodi y raised and broken away from the mass, a heel and an upwardly inclined point, riding upon the heel of the ripping bar.

3. In an asphalt ripper, a ripper bar havinga portion arranged to be coupled to a power device, a downwardly inclined reinforced breaking portion and a forwardly eX- tending point.

4. In an asphalt ripper, a ripper bar comprising a channel iron bent into a reverse curve, one end of which is arranged to be connected to a steam roller, or other powery device, and the other end of which is arranged to slide in between the asphalt layer and the bed of concrete.

5. In an asphalt ripper, a ripper bar having suitable ripping edges, which have between them an unobstructed portion, eX- tending from end to end of the bar, and means for forcing said ripper bar through the material to be acted upon.

6. In an asphalt ripper, a ripper bar having a suitable ripping edge, means for vibrating and forcing said ripper bar through the material to be acted upon and a loose pivot connection between said means and the bar.

7. In an asphalt ripper, a ripper bar having an upwardly inclined point, a riding heel an inclined breaking portion arranged to bodily raise and break the slabs of asphalt, which lie in the path of the bar, from the mass, and means for pushing said ripper bar through the material to be acted upon.

8. In an asphalt ripper, a ripper bar having an upwardly inclined point, a riding heel an inclined breaking portion arranged to bodily raise and break the slabs of asphalt, which lie in the patli of the bar, from the mass, and means for vibrating the ripper bar upon its heel as a fulcruin and pushing said ripper bar through the material 4to be acted upon.

9. In an asphalt ripper, an inclined ri per bar, having a ripping edge, and a riding eel,

' and a powerdevice, having a suitable draw head for coupling the ripper bar to the power device, said bar being coupled to one end of the power device so as to be pushed thereby and in front of the same.

l0. In an asphalt ripper, a ripper bar, having `a ripping edge, and a riding heel, a power device a plurality of vertically arranged drawheads, and means for loosely coupling the ripper bar to the power device and in front thereof, whereby the position of the inclinedpoint may be altered with respect to the bed.

ARTHUR KING. 

